Canvas and Zoom Integration - 2203 Error

Community Novice
We had successfully integrated Canvas with Zoom and added to the Canvas calendar. We then tested with a school admin who was able to create a meeting and also add a meeting to the canvas calendar. When accessing Zoom within Canvas it is now prompting an error message:

Warning: Verify LTI signature failed error code 2203


Any information or suggestions to remedy this error would be greatly appreciated!!